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Chemistry mock > Acids, alkenes, and titrations > Flashcards

Acids, alkenes, and titrations Flashcards

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1
Q

litmus, colour in acidic solution

A

red

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2
Q

methyl orange, colour in acidic solution

A

red

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3
Q

phenolphthalein, colour in acidic solution

A

colourless

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4
Q

litmus, colour in alkaline solution

A

blue

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5
Q

methyl orange, colour in alkaline solution

A

yellow

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6
Q

phenolphthalein, colour in alkaline solution

A

pink

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7
Q

what is a pH scale?

A

The pH scale ranges from 0 to 14, and tells you how acidic or how alkaline a solution is.

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8
Q

what is the use of a pH indicator?

A

the use of a universal indicator is to measure pH of an aqueous solution.

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9
Q

how to use an universal indicator?

A

a few drops of this indicator solution should be added to the Aqueous Solution and colour change is observed and matched to specific colour on pH scale (to identify pH)

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10
Q

what is an acid a source of?

A

it is a source of hydrogen ions (H+)

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11
Q

what is an alkali a source of?

A

it is a source of hydroxide ions (OH-)

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12
Q

what is one of the ways an acid can be neutralised? how?

A

by bases (alkalis). bases neutralise acids by combining hydrogen in them.

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13
Q

what is an example of bases neutralising acids

A

key reaction:
acid + base -> salt + water

example of this:
sulfuric acid + copper oxide -> copper sulfate + water

H2SO4 + CuO -> CuSO4 + H2O

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14
Q

is sodium (Na+), potassium (K+), and ammonium (NH4+) soluble?

A

yes

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15
Q

are nitrates (NO3-) soluble?

A

yes

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16
Q

are chlorides (CI-) soluble?

A

yes, but there are some exceptions: silver chloride (AgCI) and lead (II) chloride (PbCI2)

17
Q

are sulfates (SO42-) soluble?

A

yes, but with the exception of barium sulfate (BaSO4), calcium sulfate (CaSO4) and lead (II) sulfate (PbSO4)

18
Q

are carbonates (CO32-) soluble

A

no, with exceptions of sodium carbonate (Na2CO3), potassium carbonate (K2CO3) and ammonium carbonate ((NH4)2CO3)

19
Q

are hydroxides (OH-) soluble?

A

no, with the exceptions of sodium hydroxide (NaOH), potassium hydroxide (KOH) and calcium hydroxide (Ca(OH)2) (calcium hydroxide is slightly soluble)

20
Q

how is an acid related to protons?

A

An acid is a proton (H⁺) donor.

21
Q

how is a base related to protons?

A

A base is a proton (H⁺) acceptor.

22
Q

what is a proton?

A

A proton is the same as a hydrogen ion.

23
Q

what is the Acids and Metals MASH formula

A

metal + acid -> salt + hydrogen

24
Q

what is the Acids and Carbonates CAWCS formula?

A

carbonate + acid → water + carbon dioxide + salt

25
Q

what is the Acids and Metal oxides MAWS formula?

A

metal oxide + acid -> water + salt

26
Q

what is the Acids and Metal hydroxide MHAWS formula?

A

metal hydroxide + acid -> water + salt

Chemistry mock (3 decks)

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